Spool-holder



E. L. CETWICK.

SPOOL HOLDER.

APPLJCATION FILED 0CT.2I, 1918.

1,364,249; Patented Jan. 4,1921.

UNITED STATES PATENT OFFICE.

mum: LEO CETWICK, OI BRADFORD, PENNSYLVANIA, ASSIGNOR TO THE LEON FEBENBAGH SILK 00., INC., 01' WILKES-BABBE, PENNSYLVANIA, A CORPORA- T1011 01 PENNSYLVANIA.

SPOOL-HOLDER.

Specification of Letters Patent.

Patented Jan. 4, 1921.

Application filed October 21, 1918. Serial No. 258,945.

To all whom it may concern:

Be it known that I, EMMET Lno CETWICK, a citizen of the United States and residing at Bradford, McKean (30., lfennsylvama, have invented certain new and useful Improvements in Spool-Holders, of WhlCh the following is a specification.

My invention has for its purpose to retain a bobbin securely in position on a winding spindle while permitting its ready detachment when required, and to these ends I combine with a slotted spindle a spring retaining device, as fully described herein-- after, and as illustrated in the accompanying drawings in which Figure l is a longitudinal section of a winding spindle illustrating my improvement;

Fig. 2 is a longitudinal section of a winding spindle showing the bobbin in place;

Fig. 3 is an external view of the spindle without the locking device, looking in the direction of the arrow, Fig. 1; and

Fig. 4 is a section showing a modification.

The spindle A is rovided, in most cases, with a block or hearing D for the detachable spool or bobbin Y, the said block shown being secured by a cross pin 8 so as to rotate with the spindle.

The spindle A may have a slot extending nearly the whole length, as shown in Fig. 4, or part of the length, as shown in the other figures, and communicating with narrow longitudinal slots or grooves '11 at one or both sides, and within the slotted portion of the spindle is arranged the friction locking device B, consisting of a springblade or wire, one portion 5 of which normally springs outward beyond the outline of the spindle to secure a frictional adhesion against the inner bore or hole of the spool or bobbin Y while at the upper end of the said device there is a head 2 having an inclined edge :12, and an abrupt shoulder '10, the said head projecting outward to an extent limited by a cross bearing 3. In the construction shown in Figs. 1 to 3, an independent section of the device consists of a longitudinal bar 12, the upper end of which hooks into a recess above the shoulder to of the spindle, while in Fig. 4 the two sections are formed of a single wire bent centrally to form the head 2.

In the construction shown in Figs. 1 to 3,

the ends of the wires are bent to form lugs 9 which extend into a transverse opening 10 of the spindle and are held in place by the block D, while in Fig. 4, the ends of the single bent wire extend into grooves 13 of the spindle and are retained by the block D, as shown.

The spool or bobbin is placed upon the spindle, and bearing upon the inclined edge it: forces the retaining head into the slot until the upper head of the spool is below the retaining head, when the latter will spring outward and present its shoulder w in such position that the spool cannot be withdrawn until the lock is released.

It will be noted that when the bobbin is not on the spindle the hook member may be pressed into line with the spindle with ease as the spring stem of the hook is long and flexible. This enables the bobbin to be placed upon the spindle very readily. When the bobbin is in position on the spindle as shown in Fig. 2, the lower half of the spring member is prevented from flexing and hence the hook operates with a stifier spring to lock the bobbin. This mode of operation ap the drawings. To release the bobbin the hook is pressed into line with the spindle by the hand or some suitable instrument, permitting the bobbin to be withdrawn from the spindle.

W1thout limiting myself to the precise details of construction set forth, I claim 1. A winder spindle having a transverse slot at the outer end and a longitudinal groove extendin from the slot toward the inner end, combined with a retainer consisting of a spring blade within the groove and slot projecting from the groove slightly beyond the side of the spindle, and having a head projecting beyond the side of the spindle provided with an inclined edge and abrupt shoulder, said blade being substantially straight between its end portions, substantially as described.

2. A winding spindle having a longitudinal groove and a transverse slot beyond the groove, combined with a locking device consisting of a spring wire extending through the groove and slot, bent to form a head with an inclined edge and abrupt shoulder and rojecting beyond the outline of the spin 1e, substantially as described.

3. A winding spindle having a longitudinal groove, a transverse opening, a transverse slot beyond the groove, combined with a locking device consisting of a spring wire extending throughthe groove and slot,- bent at the outer end to form a head with an inclined edge and abrupt shoulder and projecting beyond the outline of the spindle, and bent at the inner end to extend into the opening, substantially as described.

4. The combination with a winding spindle having longitudinal grooves, of a locking device consisting of a spring wire bent to form a pair of friction members carried within said grooves and projecting beyond the same to frictionally engage the bore of the bobbin, and a depressible head projecting outward from the spindle and having an inclined edge and abrupt shoulder, substantially as described.

5. The combination of a winding spindle having parallel longitudinal grooves on opposite sides, and a slot beyond the grooves,

of a locking device consisting of a spring wire bent to form friction members within the grooves and projecting beyond the same, and a head projecting outward from the slot and having an inclined edge and abrupt shoulder, and means for securing the ends of the wire to the spindle, substantially as described.

6. The combination with a slotted winding spindle, of a longitudinal substantially straight locking spring wire having a friction portion for engaging the bore of the bobbin, adjacent one end thereof and a terminal head with an inclined edge and abrupt shoulder to engage the other end.

7 The combination with a slotted winding spindle, of locking means having longitudinal spring portions projecting from opposite sides of the spindle, and a yielding head with an inclined edge and abrupt shoulder, substantially as described.

In testimony whereof I aifix my signature.

EMMET LEO CETWICK. 

